1. Case Sensitivity & Accidental Spaces (Most Common)
Roblox code inputs are strictly case-sensitive. For example, typing letmecook instead of LETMECOOK will trigger an "Invalid Code" error. Additionally, copying text from web pages often adds an extra trailing space at the end (e.g. "LETMECOOK "), which Roblox treats as an incorrect character.
💡 Pro Tip:
Use our one-click Copy Button below to copy exact strings without hidden trailing spaces.
2. Code Expiration vs Invalid Codes
Developers occasionally disable promo codes during major patch updates or when milestone events end. If the game displays "Code Expired", the code has been retired by Sergio Verse Games and can no longer be claimed.
3. Server Delay & Private Server Bugs
When a fresh update drops, newly added codes may take 5 to 10 minutes to propagate across all Roblox server instances. If a code was just announced on Discord but fails in your server, try hopping to a newer server or restarting your Roblox client.
4. One-Time Redemption Rule
Every code in Grow a Chicken Fighter can only be redeemed once per Roblox account. If you already claimed a code in a previous session, re-entering it will result in a "Code Already Redeemed" notification.
Working Codes You Can Redeem Right Now
All working codes currently active and verified against live gameplay:
LETMECOOK1 Thunder Egg + 2x Money Boost (30 min)
Verified via Roblox game page, Aug 2026 update.
SERGIOVERSE50 Cash + 1 Scratch Egg + 2x Corn Boost (30 min)
Released with the second August patch.
WELCOME2 Nest Eggs + 50 Cash
Launch code, released June 16, 2026.